Table 2.
Distribution of ABO blood groups according to COVID-19 status in responding couples and in the French general population.
| ABO blood group | Total | Index cases | COVID-19+* | COVID-19−† | French population‡ |
|---|---|---|---|---|---|
| A | 286 (42.9) | 167 (50.2) | 221 (47.6) | 65 (32.2) | (44.5) |
| AB | 26 (3.9) | 13 (3.9) | 20 (4.3) | 6 (3.0) | (3.9) |
| B | 47 (7.1) | 21 (6.3) | 31 (6.7) | 16 (7.9) | (9.1) |
| O | 307 (46.1) | 132 (39.6) | 192 (41.4) | 115 (56.7) | (42.5) |
*
The values are number (%) including index cases and secondary cases.
†
Chi-squared comparison between the COVID-19+ and COVID-19− groups, p = 0.0011.
‡
Data expressed as a % from https://www.ints.fr/SangTransfGrSanguin.aspx.